Ao is one day away from starting middle school when his world begins to change. Scub Coral activity leads to Scub Bursts and mysterious G-Monsters. And when he picks up an odd bracelet, he finds himself drawn even deeper into these events.
Fiercely adamant about not relinquishing the bracelet, Ao finds himself trying to pilot the Japan Armed Forces' military Flying Platform to fight the G-Monster and defend the island.
Ao has always faced discrimination as a foreigner, but his newly revealed blue hair and involvement in the recent crisis spur the islanders to take action against him. And in the process, Ao learns more about his mother.
With renewed resolve to fight to protect the island, Ao takes on the G-Monster with some help. And in the aftermath, Ao begins to learn that the world is more complicated than he had thought.
Having thrown in his lot with Generation Bleu, Ao returns with Team Pied Piper to their headquarters in Switzerland. There, he finds himself out of his element and struggling to figure out how he fits in to their plans.
Ao gets a taste of what it's like to be part of a real mission and a better sense of just how high the stakes are. Meanwhile, strange things are happening around the world, apparently driven by one mysterious individual.
As this mysterious Truth wreaks havoc at Generation Bleu HQ, his motivations remain enigmatic, but they seem to have something to do with the Nirvash. And by extension, as Nirvash's pilot, with Ao.
Ao discovers how duplicitous adults can be and, along with Fleur, he rebels in his own way to stay true to what he believes is right.
Having failed to obtain the Nirvash for their own use, Japan goes forward with a dangerous experiment to create a Coral plant for themselves. Generation Bleu sends Ao's team to stop them at all costs.
A Scub Burst occurs in the state of Arizona. Political complications keep Pied Piper on the sidelines while Truth's meddling creates a dangerous situation for Ao and Ivica.
Pied Piper runs into an unusual situation where there is a confirmed Scub Burst, but no Secret in sight. They collect the Quartz and that seems to be the end of it, but strange things start to happen when they return to base.
Pied Piper goes up into space to take care of a Secret that presents a threat to the satellites orbiting around Earth. As the mission unfolds, there are startling revelations in store for Ao.
Bobbing in the ocean in the Gekko, Ao faces a strange reunion with Eureka. At the same time, the Allied Forces, Japan, Generation Bleu, and Truth close in on the prize - Eureka, her Nirvash, and the Gekko.
As Eureka and Ao fight against Truth, the JAF and Generation Bleu become embroiled as well. The fallout of this military encounter is further complicated by Naru's mysterious return.
Ao feels the pressure of being the only IFO pilot with an operational Third Engine. With what Eureka said to him and the Japanese claiming to have communicated with a Secret, he also struggles with the idea that the Secrets may not be the enemy.
Ao still feels conflicted about fighting Secrets, but with a swarm of Secrets descending on all the Scub Corals that have become active again, an ambitious operation is set in motion to eradicate all the Secrets at once.
After his desperate stand against the swarm of Secrets, Ao finds himself in a world that is familiar, yet different in disturbing ways. As he tries to figure out what happened and how he might fix it, he makes a startling move.
With Ao gone, Fleur and Elena are left to confront their differences over how they deal with the way he left. But no matter how they feel, the only way either of them can go to him is by activating the Third Engines on their IFOs.
The world has turned against Generation Bleu for taking back Ao and the Quartz Gun. They now find themselves facing UN sanctions and the Allied Forces, even as they try to figure out who's side to take - the Secrets or the Scub Corals.
With Blanc gone and the Generation Bleu Headquarters beseiged by the Allied Forces, Ao and the others must figure out what they believe in and whether it's worth fighting for.
Team Pied Piper works with Japan and the Secrets to hold up their end of the agreement that Blanc forged before he died. And Elena, now with the Allied Forces, struggles to come to terms with her true identity.
The confrontation with Truth brings to light new truths about him and the strange IFO-like craft called the Canon that is now a part of him. And these inconvenient truths begin to change things for Naru and for the Allied Forces.
The complicated relationship between Ao, Naru, and Truth comes to a head. As they try to sort things out, a stranger appears and he seems to have some uncanny knowledge.
Together with his father for the first time, Ao has many questions for Renton. As the heartbreaking answers are revealed, Ao makes his choice.
